1990

First use of preimplantation genetic diagnosis, which “involves fertilizing an egg with sperm in a Petri dish, doing tests on the resulting embryos to determine their genetic characteristics, and then implanting into a woman’s womb the embryo with the most desire traits. It allows parents to choose the gender of their and avoid having a child who carries a genetic disease or some other attribute the parents find undesirable” (Issacson, 274).